Atomic radii (Clementi)

Many references give table of atomic radii. Sometimes in text books and other sources, the rather vague term "atomic radius" is not defined and in such cases it is therefore not clear what the values actually mean. The values given here for atomic radius are calculated values using methods outlined in reference 1.

These values are calculated using self-consistent-field functions (reference 1). You should consult reference 1 for full details, but it is not light reading for most people. There is a correlation between the atomic radii as determined from these calculations and the radii of maximum charge density in the outermost shell of the atom.

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This picture illustrates periodicity of atomic radii (Clementi) for the chemical elements on a periodic table. The height of each block is proportional to the value of atomic radii (Clementi).
This picture illustrates periodicity of atomic radii (Clementi) for the chemical elements on a periodic table. The height of each block is proportional to the value of atomic radii (Clementi).
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Units

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Notes

None

Select from the following links to see visual periodicity representations for atomic radii, covalent radii, and van der Waals radii. Ionic radii are also available.

Literature sources

  1. E. Clementi, D.L.Raimondi, and W.P. Reinhardt, J. Chem. Phys. 1963, 38, 2686.
Explore the element of your choice through this periodic table.
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**
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*Lanthanoids *
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**Actinoids **
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